CA2076096A1 - Control device - Google Patents

Control device

Info

Publication number
CA2076096A1
CA2076096A1 CA002076096A CA2076096A CA2076096A1 CA 2076096 A1 CA2076096 A1 CA 2076096A1 CA 002076096 A CA002076096 A CA 002076096A CA 2076096 A CA2076096 A CA 2076096A CA 2076096 A1 CA2076096 A1 CA 2076096A1
Authority
CA
Canada
Prior art keywords
control device
housing members
switch
snap
disc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002076096A
Other languages
French (fr)
Other versions
CA2076096C (en
Inventor
Ronald Lee Hogue
James Paul Frank
Donald Ellsworth Nice
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2076096A1 publication Critical patent/CA2076096A1/en
Application granted granted Critical
Publication of CA2076096C publication Critical patent/CA2076096C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
    • H01H11/0031—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches for allowing different types or orientation of connections to contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0056—Apparatus or processes specially adapted for the manufacture of electric switches comprising a successive blank-stamping, insert-moulding and severing operation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/06—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/26—Details
    • H01H35/2607—Means for adjustment of "ON" or "OFF" operating pressure
    • H01H35/2628—Means for adjustment of "ON" or "OFF" operating pressure by varying the relative position of switch-casing and pressure sensitive element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49004—Electrical device making including measuring or testing of device or component part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49105—Switch making

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Push-Button Switches (AREA)
  • Manufacture Of Switches (AREA)

Abstract

A pressure sensitive control device having a housing made up of a plurality of housing members, a diaphragm, a bistable snap-disc, a switch and an actuator.
T'he snap-disc moves from one configuration to another upon application of pressure over a predetermined amount to drive the actuator which moves the switch from its normal operating position, which can be either closed or open, to a tripped position, which is opposite its normal operating position. Two adjacent housing members, which support the snap-disc and switch, respectively. are formed with cooperating spacers which allow the spacing of these housing members to be continuously varied over a small range of adjustment to allow the switch point of the control device to be adjusted after partial assembly of the control device. The diaphragm and some of the housing members may be subassembled for testing the components of the control device prior to complete assembly. The switch is initially formed as one piece and electrically halved after subassembly with one of the housing members. A
housing member which is formed for connection to an electrical control circuit to which the control device is to be attached as modular and can be replaced with similar housing members which are configured for connection to different types of mating electrical connectors associated with different control circuits.
Methods of assembly are also enclosed.
CA002076096A 1991-09-11 1992-08-13 Control device Expired - Lifetime CA2076096C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US757,821 1991-09-11
US07/757,821 US5198631A (en) 1991-09-11 1991-09-11 Pressure responsive control device

Publications (2)

Publication Number Publication Date
CA2076096A1 true CA2076096A1 (en) 1993-03-12
CA2076096C CA2076096C (en) 2003-08-12

Family

ID=25049345

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002076096A Expired - Lifetime CA2076096C (en) 1991-09-11 1992-08-13 Control device

Country Status (3)

Country Link
US (3) US5198631A (en)
JP (1) JP3450868B2 (en)
CA (1) CA2076096C (en)

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US6510740B1 (en) 1999-09-28 2003-01-28 Rosemount Inc. Thermal management in a pressure transmitter
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US6487912B1 (en) 1999-09-28 2002-12-03 Rosemount Inc. Preinstallation of a pressure sensor module
US6505514B1 (en) 1999-11-19 2003-01-14 Siemens Canada Limited Sensor arrangement for an integrated pressure management apparatus
US6546805B2 (en) 2000-03-07 2003-04-15 Rosemount Inc. Process fluid transmitter with an environmentally sealed service block
US6662662B1 (en) 2000-05-04 2003-12-16 Rosemount, Inc. Pressure transmitter with improved isolator system
US6504489B1 (en) 2000-05-15 2003-01-07 Rosemount Inc. Process control transmitter having an externally accessible DC circuit common
US6480131B1 (en) 2000-08-10 2002-11-12 Rosemount Inc. Multiple die industrial process control transmitter
US6516672B2 (en) 2001-05-21 2003-02-11 Rosemount Inc. Sigma-delta analog to digital converter for capacitive pressure sensor and process transmitter
US6684711B2 (en) 2001-08-23 2004-02-03 Rosemount Inc. Three-phase excitation circuit for compensated capacitor industrial process control transmitters
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US7109883B2 (en) * 2002-09-06 2006-09-19 Rosemount Inc. Low power physical layer for a bus in an industrial transmitter
US7773715B2 (en) 2002-09-06 2010-08-10 Rosemount Inc. Two wire transmitter with isolated can output
US6740828B1 (en) 2003-08-08 2004-05-25 Claudio R. Dacal Arm and safety switch
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US7036381B2 (en) * 2004-06-25 2006-05-02 Rosemount Inc. High temperature pressure transmitter assembly
EP1805845B1 (en) * 2004-10-29 2008-09-10 Rohde & Schwarz GmbH & Co. KG Electric switching device comprising magnetic and/or fluidic adjusting elements
CN100593831C (en) * 2005-06-23 2010-03-10 王正宗 Air pressure switch of aerated product
CN100468596C (en) * 2005-07-07 2009-03-11 王正宗 Buffering device for pneumatic switch of air-inflated product
US7525419B2 (en) * 2006-01-30 2009-04-28 Rosemount Inc. Transmitter with removable local operator interface
US7256361B1 (en) * 2006-12-27 2007-08-14 Su-Yun Lee Pressure switch
US8334788B2 (en) * 2010-03-04 2012-12-18 Rosemount Inc. Process variable transmitter with display
US20120255851A1 (en) * 2011-04-05 2012-10-11 Clark Donnell Freeman Combination Pressure and Temperature Sensor for Simultaneous Temperature and Pressure Analyzing in HVAC Ducts
US9470498B1 (en) * 2014-09-05 2016-10-18 The United States Of America As Represented By The Secretary Of The Army High pressure isolated latching safety switch device
ITUA20162076A1 (en) * 2016-03-29 2017-09-29 S I E Srl PRESSURE SWITCH WITH INTERCHANGEABLE CONNECTOR.
US11153985B2 (en) * 2017-06-29 2021-10-19 Rosemount Inc. Modular hybrid circuit packaging

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Also Published As

Publication number Publication date
US5300741A (en) 1994-04-05
JPH05242758A (en) 1993-09-21
CA2076096C (en) 2003-08-12
JP3450868B2 (en) 2003-09-29
US5524333A (en) 1996-06-11
US5198631A (en) 1993-03-30

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